Finding the Fourth Proportional to 1,061.12, 1,591.62 and 291.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.12 : 1,591.62 = 291.62 : x
2. Step 2: Convert to fraction form
   1,061.12/1,591.62 = 291.62/x
3. Step 3: Cross multiply
   1,061.12x = 1,591.62 × 291.62
4. Step 4: Simplify right side
   1,061.12x = 464,148.22
5. Step 5: Solve for x
   x = 464,148.22/1,061.12
6. Step 6: Final answer
   x = 437.41